Maximize your system with current sense amplifiers
Current sensing solutions for protection, feedback control and system monitoring
Whether you need to detect an over-current fault for system diagnostics, provide system feedback control, or improve system power efficiency, we deliver industry-leading current sensing accuracy across a broad range of common mode voltages for any current sensing application.
Current / voltage / power monitors
Integrate the full signal conditioning path and utilize a standard 2-wire digital interface
Featured products
INA190
40V, bi-directional, low-/high-side, zero-drift, voltage output current sense amplifier w/ low bias current and enable
INA253
80V, low-/high-side, bi-directional, current sense amplifier w/PWM rejection & precision integrated shunt resistor
Featured reference designs
48V 3-phase inverter with shunt-based in-line motor phase current sensing
Demonstrates accurate control of precision drives
Solar MPPT charge controller
20A MPPT solar charge controller created for solar panel inputs corresponding to 12V and 24V panels
Automotive USB charger with linear droop compensation reference design
Provides detailed data for evaluating and verifying a USB charger
-48V Telecom current/voltage/power sense with isolation
Ability to report current, voltage and power on a bus that carries -48V
Leakage current measurement for determining insulation resistance
A reference solution to measure Insulation Resistance up to 100MΩ
24W Boost and boost-to-battery reference design for automotive LED lighting
24W, high-efficiency (94%), low cost, Asynchronous boost design for automotive LED applications
Featured technical resources
Explore a comprehensive library of application-specific current sensing design challenges and how to solve them
Featured reference designs and current sense amplifier products
Browse our library of training videos and get started with current sense amplifiers
Search part numbers from any supplier and find comparable TI devices
Application notes
Browse current and power measurement use cases. Each application note includes problem analysis, implementation options and related products.
General Current & Power Monitoring Challenges
| Application notes | Download application notes | Devices |
|---|---|---|
| Measuring Current To Detect Out-of-Range Conditions | ||
| Monitoring Current for Multiple Out-of-Range Conditions | ||
| Integrating the Current Sensing Signal Path | INA226 | |
| Integrating the Current Sensing Resistor | ||
| Improve Shunt Layout with Integrated Current Sense Resistor | ||
| Integrated, Current Sensing Analog-to-Digital Converter | INA226 | |
| Op-Amp Current Sense Circuit Integration | INA180 | |
| Discrete Current Sensing vs. SOC Integrated Current Sensing Function | INA199 | |
| Energy & Power Monitoring | INA233 | |
| Digital Interface for Power Monitors | ||
| Precision, Low-Side Current Measurement | INA199 | |
| Precision Current Measurement on High-Voltage Power Supply Rails | INA190 | |
| Common Uses for Multi-Channel Current Monitoring | ||
| Low Temperature Drift Integrated Shunt vs. Active Temperature Compensation of Shunt |
High Voltage (100V+) Current & Power Monitoring Specific Challenges
Motor/Solenoid Specific Challenges
| Application notes | Download application notes | Devices |
|---|---|---|
| High Precision, Low-Drift In-Line Motor Current Measurements | ||
| Low-Drift, Low-Side Current Measurements for Three Phase Systems | INA301 | |
| High-Side DC-Link Motor Current Monitoring for Over-Current Protection | INA240 | |
| High-Side Drive, High-Side Solenoid Monitor With PWM Rejection | ||
| Bi-Directional, Low-Side Phase Current Sensing with Integrated Over-Current Detection | ||
| Bi-Directional Current Measurement in H-Bridge | INA240 | |
| Benefits of Low Inductive Shunt for Current Sensing in PWM Applications |
End Equipment Specific Challenges
| Application notes | Download application notes | Devices |
|---|---|---|
| Current Measurements for Switching Power Supply | INA240 | |
| Current Sensing In Current Mode Control Power Supply | INA240 | |
| Precision Brightness and Color Mixing in LED Lighting Using Discrete Current Sense Amplifiers | INA240 | |
| Protection for Discrete Digital Outputs in PLC Systems | INA240 | |
| Current Sense Amplifiers in Class-D Audio Subsystems | INA240 |